04-09-2012, 10:11 AM
VRML
Brief introduction to VRML.docx (Size: 15.02 KB / Downloads: 32)
Brief introduction to VRML
What is VRML?
VRML sometimes pronounced vermal is an anonym for the virtual reality modeling language.
Technically speaking, VRML is neither virtual reality nor a modeling language. Virtual reality
Typically implies on immersion. 3d experience (such as a head- Mounted display) and 3d input devices (such as digital gloves). VRML neither requires nor precludes immersion.furthere more, a true modeling language would contain much richer geometric modeling primitives and mechanisms.VRML provides a bare minimum of geometric modeling features and contains numerous features far beyond the scope of
Modeling language.
So if VRML is not virtual reality or a modeling language, what is it? There are several answers to this question .at its core, VRML is simply a3D interchange format. It defines most of the commonly used semantics found into day’s 3D application such as hierarchal transformations. Light sources, viewpoints, geometry, animation, fogs, material properties and texture, mapping. One of the primary goals in designing VRML was to ensure that it at least succeeded as an effective 3D file interchange format.
The second answer is that VRML is a 3D analog to html this means that VRML server as a simple, multiflat form language for publishing 3D web pages. This is motivated by the fact that some information is best experienced three dimensionally, such as games, engineering and scientific visualization, educational experience, and architecture.
Typically, these types of projects require intensive interaction, animation, and using participation and exploration beyond what is capable with a page, text, or image-based format (i.e, HTML).
Another answer is that VRML provides the technology that integrates three dimensional, two dimensional, text ,and multimedia into a coherent model. When these media type are combined with scripting language and internet capabilities, an entirely new genre of interactive application are possible a 3D metaphor presents a natural user experience that supports classic two-dimensional (2-D) desktop models as well as extends in to broader contexts of space and place. Many have speculated that the 3D world model will supersede and thus replace the popular 2D desktop model as the primary user interface paradigm in the next decades. Of course, there are a variety of challenges that need to be overcome before this is possible .such as 3D user interface and navigation, usertraining, and ubiquitous 3D graphics performance.
A fourth answer, and the one most publicized and debated, is that VRML is the foundation for cyberspace and the on-line virtual communities that were painted and popularized by science fiction writers William Gibson in necromancer and near Stephenson in snow crash. Critics have accurately pointed out that VRML does not yet define the networking and database protocols necessary for true multiuser simulations’.